Yamaha 505 Service Manual Page 18
- Page / 92
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
GX-505/GX-505VCD
GX-505/VCD
The CD TEST MODE is enabled. Each button operates as follows for each mode. The MODE No. is increased by
pushing
"+10" button.
Button
" 0 "
" 1 "
" 2 "
" 3 "
" 4 "
" 5 "
" 6 "
" 7 "
" 8 "
" 9 "
Button
" 0 "
" 1 "
" 2 "
" 3 "
" 4 "
" 5 "
" 6 "
" 7 "
" 8 "
" 9 "
MODE 4 MODE 5 (GX-505VCD only)
Feed forward (outer direction) CD-ROM module load
Feed backward (inner direction) CD-G module load
Rotate the disc motor Decoder play command
Retard the disc motor Decoder pause command
port TBLL ← Low, Decoder abort command
port TBLR ← High
port TSLW High/Low alternate Decoder soft reset
Tray port control (open/close) Decoder hard reset
Line mute on/off —
——
Jump to Test mode 1 —
MODE 1 MODE 2 MODE 3
Open/close the tray Focus search Cancel adjust pass *2
Clamp up/down Play (PLL) Auto adjustment mode 1 *1
Tracking Offset, Focus Offset,
Focus Gain
DISC change Play (without PLL) Auto adjustment mode 2 *1
Tracking Balance, Tracking Gain
Mechanism home process Focus on, Tracking off, Feed off Auto adjustment mode 3 *1
Focus Gain, Tracking Gain,
Focus Balance
Jump to test mode 4 +10 track kick Read and display the servo
coefficient
Tray close, Clamp down –10 track kick Displayed servo coefficient
address up
— +1 track kick Displayed servo coefficient
address down
Enter normal operation –1 track kick Displayed servo coefficient
(without mecha. INIT.) increment
Enter normal operation +30 track kick Displayed servo coefficient
decrement
Start TEST REPEAT –30 track kick Send the displayed servo
(Do not use this function as coefficient *2
it is not for servicing.)
*1 “Adj-” lights during the
adjustment and disappears at
the end of the adjustment.
*2 When the mode is reset to the
normal operating mode after the
servo coefficients are reset by
this operation, auto adjustment
is not available unless the auto
adjustment pass function is
cancelled.
Open/close the tray
Clamp up/down
Controls for the tray, the disc table and clamping stop. STANDBY command for the servo system.
Play (PLL)
Feed forward (outer direction)
Feed backward (inner direction)
Tray close, clamper down
OPEN/CLOSE
DISC CHANGE
a (STOP)
w / d
(PLAY/PAUSE)
y
t
DISC 1
The following button functions are not changed in the test mode No.
[VCD Module condition check]
If the VCD module is in a good condition, the blue background appears on the monitor screen when in the CD test mode.
If the blue background does not appear, the possibility is that the VCD module has failed.
NOTE: None of the components of the VCD module can be supplied separately. Only a VCD module unit (VZ150200) is available.
When the CD TEST MODE is set through the SYSTEM TEST MODE, “00 TM1 00: 00” appears on the FL display.
■ CD TEST MODE
17
- GX-505VCD 1
- ■ TO SERVICE PERSONNEL 2
- Laser Emitting conditions: 3
- ■ GX-505 PANELS 4
- ■ GX-505VCD PANELS 6
- ■ SPECIFICATIONS 7
- ■ INTERNAL VIEW 8
- GX-505/VCD 10
- Friction 12
- 19.4 ± 0.2 mm 13
- ■ VOLUME RANGE 14
- ■ SYSTEM CONTROL CHECK 14
- ■ TEST MODE 15
- ■ SYSTEM TEST MODE 15
- ■ RECEIVER TEST MODE 16
- ■ TAPE TEST MODE 17
- ■ CD TEST MODE 18
- ■ CD ERROR MESSAGES 19
- GX-505/GX-505VCD 20
- “MECHANICAL ADJUSTMENT” 23
- “ELECTRICAL ADJUSTMENT” 23
- ■ IC DATA 25
- PATTERN AREA 32
- ■ BLOCK DIAGRAM 34
- ● Semiconductor Location 37
- MAIN P.C.B. (5) 48
- MAIN P.C.B. (6) 48
- SCHEMATIC DIAGRAM (GX-505 CD) 49
- INPUT (3) 51
- INPUT (1) 51
- INPUT (2) 52
- PARTS LIST 57
- ■ GX-505 EXPLODED VIEW 76
- ■ GX-505 MECHANICAL PARTS 77
- ■ GX-505VCD EXPLODED VIEW 80
- ■ GX-505VCD MECHANICAL PARTS 81
- MEN-125F 87
- EXPLODED VIEW (Loading Unit) 88
- New Parts 89
- ■ SCHEMATIC DIAGRAM 90
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